The near-surface shear layer exhibits a rich medley of flows
that vary in size from granular and supergranular flows to
flows of global scale. The largest of these flows have been
dubbed Solar Surface Weather (SSW), and have been detected
with both time-distance tomography and ring analysis. We
present comparisons of synoptic maps of SSW flows obtained
with both techniques from SOI-MDI Dynamics Program data.
Both techniques provide measurements of the flows as a
function of depth through inversion. The time-distance
method utilizes only p-mode oscillations, while the ring
analysis uses f modes as well. We find that the flows
obtained with the two helioseismic techniques are remarkably
similar, with common inflow and outflow sites as well as
agreement in the general flow direction. At a depth of
roughly 1.5 Mm the Spearman rank correlation coefficient
between maps is on the order of 0.80. As the depth increases
the correlation become weaker. The reduction in the
correlation coefficient with depth is due to the increasing
difference between the vertical resolution kernel of the two
seismic techniques.